If diffraction pattern obtained by using violet light instead of patterns obtained by red light, then ...

Options

A. diffraction pattern will disappear.
B. diffraction pattern will look unleashed
C. diffraction pattern remain constant
D. diffraction pattern will narrower.

Answer

D

Explanation

Diffraction `sin theta=(lambda)/(d)` here d is constant
`:.sin theta lambda prop lambda and lambda_(v) lt lambda_(R)`
sin function increases in first quadrant.
`:. theta_(v) lt theta_(R)`
`:.` The pattern of interference fringes obtained closer.